To determine an object's charge, it is important to apply the principles of electrostatics, specifically how charged objects interact with one another.
The correct procedures and expected results regarding whether an object has a positive charge, a negative charge, or is neutral can be evaluated as follows:
A) Bring a pith ball that has a negative charge near the object. If the ball is repelled, the object is electrically neutral.
False. If the pith ball (negative) is repelled, it indicates the object also has a negative charge, not that it is neutral.
B) Bring a pith ball that has a positive charge near the object. If the ball is repelled, the object has a positive charge.
True. If the positively charged pith ball is repelled by the object, the object must also have a positive charge.
C) Bring a pith ball that has a negative charge near the object. If the ball is attracted, the object has a positive charge.
True. If the negatively charged pith ball is attracted, this indicates that the object has a positive charge.
D) Bring a pith ball that has a positive charge near the object. If the ball is attracted, the object is electrically neutral.
False. If the pith ball is attracted, the object has either a negative charge or is neutral.
E) Bring a pith ball that has a negative charge near the object. If the ball is repelled, the object is electrically neutral.
False. If the negatively charged pith ball is repelled, the object also has a negative charge.
F) Bring a pith ball that has a positive charge near the object. If the ball is attracted, the object has a negative charge.
True. If the positively charged pith ball is attracted, this indicates that the object has a negative charge.
Based on this analysis, the correct procedures and expected results are: B, C, and F.